Hendrik Lipka
touch screen handler for the microchip AR1020
ar1020.cpp@2:1a436d154c84, 2011-02-22 (annotated)
- Committer:
- hlipka
- Date:
- Tue Feb 22 22:11:49 2011 +0000
- Revision:
- 2:1a436d154c84
- Parent:
- 1:264ad2a00fd9
- Child:
- 3:b7eb3b3fe79f
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| hlipka | 0:cf4dd04052e3 | 1 | /* |
| hlipka | 0:cf4dd04052e3 | 2 | * mbed AR1020 library |
| hlipka | 0:cf4dd04052e3 | 3 | * Copyright (c) 2010 Hendrik Lipka |
| hlipka | 0:cf4dd04052e3 | 4 | * |
| hlipka | 0:cf4dd04052e3 | 5 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| hlipka | 0:cf4dd04052e3 | 6 | * of this software and associated documentation files (the "Software"), to deal |
| hlipka | 0:cf4dd04052e3 | 7 | * in the Software without restriction, including without limitation the rights |
| hlipka | 0:cf4dd04052e3 | 8 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| hlipka | 0:cf4dd04052e3 | 9 | * copies of the Software, and to permit persons to whom the Software is |
| hlipka | 0:cf4dd04052e3 | 10 | * furnished to do so, subject to the following conditions: |
| hlipka | 0:cf4dd04052e3 | 11 | * |
| hlipka | 0:cf4dd04052e3 | 12 | * The above copyright notice and this permission notice shall be included in |
| hlipka | 0:cf4dd04052e3 | 13 | * all copies or substantial portions of the Software. |
| hlipka | 0:cf4dd04052e3 | 14 | * |
| hlipka | 0:cf4dd04052e3 | 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| hlipka | 0:cf4dd04052e3 | 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| hlipka | 0:cf4dd04052e3 | 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| hlipka | 0:cf4dd04052e3 | 18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| hlipka | 0:cf4dd04052e3 | 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| hlipka | 0:cf4dd04052e3 | 20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| hlipka | 0:cf4dd04052e3 | 21 | * THE SOFTWARE. |
| hlipka | 0:cf4dd04052e3 | 22 | */ |
| hlipka | 0:cf4dd04052e3 | 23 | |
| hlipka | 0:cf4dd04052e3 | 24 | #include "ar1020.h" |
| hlipka | 0:cf4dd04052e3 | 25 | #include "wait_api.h" |
| hlipka | 0:cf4dd04052e3 | 26 | |
| hlipka | 2:1a436d154c84 | 27 | AR1020::AR1020(SPI *spi, PinName enable, PinName sqi, PinName power, bool swapX, bool swapY, bool swapXY) { |
| hlipka | 0:cf4dd04052e3 | 28 | _spi=spi; |
| hlipka | 0:cf4dd04052e3 | 29 | _enable=new DigitalOut(enable); |
| hlipka | 0:cf4dd04052e3 | 30 | _enable->write(1); |
| hlipka | 0:cf4dd04052e3 | 31 | _irq=new InterruptIn(sqi); |
| hlipka | 0:cf4dd04052e3 | 32 | _x=-1; |
| hlipka | 0:cf4dd04052e3 | 33 | _y=-1; |
| hlipka | 0:cf4dd04052e3 | 34 | _pen=0; |
| hlipka | 0:cf4dd04052e3 | 35 | _oldPen=false; |
| hlipka | 0:cf4dd04052e3 | 36 | _led=new DigitalOut(LED1); |
| hlipka | 1:264ad2a00fd9 | 37 | _power=new DigitalOut(power); |
| hlipka | 1:264ad2a00fd9 | 38 | _power->write(0); |
| hlipka | 0:cf4dd04052e3 | 39 | } |
| hlipka | 0:cf4dd04052e3 | 40 | |
| hlipka | 2:1a436d154c84 | 41 | AR1020::AR1020(PinName mosi, PinName miso, PinName clk, PinName enable, PinName sqi, PinName power, bool swapX, bool swapY, bool swapXY) { |
| hlipka | 0:cf4dd04052e3 | 42 | _mosi=new DigitalOut(mosi); |
| hlipka | 0:cf4dd04052e3 | 43 | _miso=new DigitalIn(miso); |
| hlipka | 0:cf4dd04052e3 | 44 | _clk=new DigitalOut(clk); |
| hlipka | 0:cf4dd04052e3 | 45 | _clk->write(0); |
| hlipka | 0:cf4dd04052e3 | 46 | |
| hlipka | 0:cf4dd04052e3 | 47 | _enable=new DigitalOut(enable); |
| hlipka | 0:cf4dd04052e3 | 48 | _enable->write(1); |
| hlipka | 0:cf4dd04052e3 | 49 | _irq=new InterruptIn(sqi); |
| hlipka | 0:cf4dd04052e3 | 50 | _sqi=new DigitalIn(sqi); |
| hlipka | 0:cf4dd04052e3 | 51 | _x=-1; |
| hlipka | 0:cf4dd04052e3 | 52 | _y=-1; |
| hlipka | 0:cf4dd04052e3 | 53 | _pen=0; |
| hlipka | 0:cf4dd04052e3 | 54 | _oldPen=false; |
| hlipka | 0:cf4dd04052e3 | 55 | _led=new DigitalOut(LED1); |
| hlipka | 1:264ad2a00fd9 | 56 | _power=new DigitalOut(power); |
| hlipka | 1:264ad2a00fd9 | 57 | _power->write(0); |
| hlipka | 0:cf4dd04052e3 | 58 | } |
| hlipka | 0:cf4dd04052e3 | 59 | |
| hlipka | 2:1a436d154c84 | 60 | AR1020::~AR1020() { |
| hlipka | 0:cf4dd04052e3 | 61 | delete _enable; |
| hlipka | 0:cf4dd04052e3 | 62 | delete _irq; |
| hlipka | 0:cf4dd04052e3 | 63 | } |
| hlipka | 0:cf4dd04052e3 | 64 | |
| hlipka | 2:1a436d154c84 | 65 | void AR1020::init() { |
| hlipka | 1:264ad2a00fd9 | 66 | _power->write(1); |
| hlipka | 1:264ad2a00fd9 | 67 | wait_ms(100); |
| hlipka | 2:1a436d154c84 | 68 | int r=cmd(0x13,NULL,0); |
| hlipka | 0:cf4dd04052e3 | 69 | printf("disable touch=%i\n",r); |
| hlipka | 0:cf4dd04052e3 | 70 | |
| hlipka | 0:cf4dd04052e3 | 71 | int regStart=cmd(0x22,NULL,0); |
| hlipka | 0:cf4dd04052e3 | 72 | printf("reg offset=%i\n",regStart); |
| hlipka | 0:cf4dd04052e3 | 73 | |
| hlipka | 0:cf4dd04052e3 | 74 | if (regStart<0) |
| hlipka | 0:cf4dd04052e3 | 75 | return; |
| hlipka | 0:cf4dd04052e3 | 76 | |
| hlipka | 0:cf4dd04052e3 | 77 | char cid2[4]={0x00,0x0d+regStart,0x01,0x01}; |
| hlipka | 0:cf4dd04052e3 | 78 | r=cmd(0x21,cid2,4); |
| hlipka | 0:cf4dd04052e3 | 79 | printf("set mode=1 => %i\n",r); |
| hlipka | 0:cf4dd04052e3 | 80 | |
| hlipka | 0:cf4dd04052e3 | 81 | |
| hlipka | 2:1a436d154c84 | 82 | r=cmd(0x12,NULL,0); |
| hlipka | 0:cf4dd04052e3 | 83 | printf("enable touch=%i\n",r); |
| hlipka | 0:cf4dd04052e3 | 84 | _irq->rise(this, &AR1020::read); |
| hlipka | 0:cf4dd04052e3 | 85 | } |
| hlipka | 0:cf4dd04052e3 | 86 | |
| hlipka | 2:1a436d154c84 | 87 | int AR1020::x() { |
| hlipka | 0:cf4dd04052e3 | 88 | return _x; |
| hlipka | 0:cf4dd04052e3 | 89 | } |
| hlipka | 0:cf4dd04052e3 | 90 | |
| hlipka | 2:1a436d154c84 | 91 | int AR1020::y() { |
| hlipka | 0:cf4dd04052e3 | 92 | return _y; |
| hlipka | 0:cf4dd04052e3 | 93 | } |
| hlipka | 0:cf4dd04052e3 | 94 | |
| hlipka | 2:1a436d154c84 | 95 | int AR1020::pen() { |
| hlipka | 0:cf4dd04052e3 | 96 | return _pen; |
| hlipka | 0:cf4dd04052e3 | 97 | } |
| hlipka | 0:cf4dd04052e3 | 98 | |
| hlipka | 0:cf4dd04052e3 | 99 | |
| hlipka | 2:1a436d154c84 | 100 | void AR1020::read() { |
| hlipka | 2:1a436d154c84 | 101 | while (1==_sqi->read()) { |
| hlipka | 2:1a436d154c84 | 102 | _led->write(1); |
| hlipka | 2:1a436d154c84 | 103 | _enable->write(0); |
| hlipka | 2:1a436d154c84 | 104 | wait_us(60); |
| hlipka | 2:1a436d154c84 | 105 | |
| hlipka | 2:1a436d154c84 | 106 | int pen=readByte(); |
| hlipka | 2:1a436d154c84 | 107 | wait_us(60); |
| hlipka | 2:1a436d154c84 | 108 | |
| hlipka | 2:1a436d154c84 | 109 | int xlo=readByte(); |
| hlipka | 2:1a436d154c84 | 110 | wait_us(60); |
| hlipka | 2:1a436d154c84 | 111 | |
| hlipka | 2:1a436d154c84 | 112 | int xhi=readByte(); |
| hlipka | 2:1a436d154c84 | 113 | wait_us(60); |
| hlipka | 2:1a436d154c84 | 114 | |
| hlipka | 2:1a436d154c84 | 115 | int ylo=readByte(); |
| hlipka | 2:1a436d154c84 | 116 | wait_us(60); |
| hlipka | 2:1a436d154c84 | 117 | |
| hlipka | 2:1a436d154c84 | 118 | int yhi=readByte(); |
| hlipka | 2:1a436d154c84 | 119 | _enable->write(1); |
| hlipka | 0:cf4dd04052e3 | 120 | |
| hlipka | 0:cf4dd04052e3 | 121 | // printf("0x%x|0x%x|0x%x|0x%x|0x%x\n", pen,xlo,xhi,ylo,yhi); |
| hlipka | 2:1a436d154c84 | 122 | if (0x4d==pen || 0==pen || 255==pen) { |
| hlipka | 2:1a436d154c84 | 123 | // ignore invalid stuff, do nothing... |
| hlipka | 2:1a436d154c84 | 124 | } else if (0x81!=pen&0x81) { // pen set? |
| hlipka | 2:1a436d154c84 | 125 | _pen=0; |
| hlipka | 2:1a436d154c84 | 126 | int x=xlo+(xhi<<7); |
| hlipka | 2:1a436d154c84 | 127 | int y=ylo+(yhi<<7); |
| hlipka | 2:1a436d154c84 | 128 | if (0!=x&&0!=y) { |
| hlipka | 2:1a436d154c84 | 129 | _x=x; |
| hlipka | 2:1a436d154c84 | 130 | _y=y; |
| hlipka | 2:1a436d154c84 | 131 | } |
| hlipka | 2:1a436d154c84 | 132 | } else { |
| hlipka | 2:1a436d154c84 | 133 | _pen=1; |
| hlipka | 2:1a436d154c84 | 134 | int x=xlo+(xhi<<7); |
| hlipka | 2:1a436d154c84 | 135 | int y=ylo+(yhi<<7); |
| hlipka | 2:1a436d154c84 | 136 | if (0!=x&&0!=y) { |
| hlipka | 2:1a436d154c84 | 137 | _x=x; |
| hlipka | 2:1a436d154c84 | 138 | _y=y; |
| hlipka | 2:1a436d154c84 | 139 | } |
| hlipka | 0:cf4dd04052e3 | 140 | } |
| hlipka | 2:1a436d154c84 | 141 | _event.x=_x; |
| hlipka | 2:1a436d154c84 | 142 | _event.y=_y; |
| hlipka | 2:1a436d154c84 | 143 | _event.pen=_pen; |
| hlipka | 2:1a436d154c84 | 144 | if (_pen==1 && _oldPen==false) { // pen down |
| hlipka | 2:1a436d154c84 | 145 | _callbackPD.call((uint32_t)&_event); |
| hlipka | 2:1a436d154c84 | 146 | } else if (_pen==1 && _oldPen==true) { // pen moved |
| hlipka | 2:1a436d154c84 | 147 | _callbackPM.call((uint32_t)&_event); |
| hlipka | 2:1a436d154c84 | 148 | } else if (_pen==0 && _oldPen==true) { // pen up |
| hlipka | 2:1a436d154c84 | 149 | _callbackPU.call((uint32_t)&_event); |
| hlipka | 2:1a436d154c84 | 150 | } else { |
| hlipka | 2:1a436d154c84 | 151 | // happens on the first touch (the first report is send with pen=0). |
| hlipka | 2:1a436d154c84 | 152 | } |
| hlipka | 2:1a436d154c84 | 153 | _oldPen=(_pen==1); |
| hlipka | 2:1a436d154c84 | 154 | _led->write(0); |
| hlipka | 2:1a436d154c84 | 155 | if (1==_sqi->read()) |
| hlipka | 2:1a436d154c84 | 156 | wait_ms(5); |
| hlipka | 0:cf4dd04052e3 | 157 | } |
| hlipka | 0:cf4dd04052e3 | 158 | } |
| hlipka | 0:cf4dd04052e3 | 159 | |
| hlipka | 2:1a436d154c84 | 160 | int AR1020::cmd(char cmd,char* data, int len, bool doEnable) { |
| hlipka | 2:1a436d154c84 | 161 | if (doEnable) { |
| hlipka | 2:1a436d154c84 | 162 | _enable->write(1); |
| hlipka | 2:1a436d154c84 | 163 | wait_us(1000); |
| hlipka | 2:1a436d154c84 | 164 | _enable->write(0); |
| hlipka | 2:1a436d154c84 | 165 | } |
| hlipka | 2:1a436d154c84 | 166 | |
| hlipka | 0:cf4dd04052e3 | 167 | wait_us(10); |
| hlipka | 2:1a436d154c84 | 168 | |
| hlipka | 0:cf4dd04052e3 | 169 | writeByte(0x55); |
| hlipka | 0:cf4dd04052e3 | 170 | wait_us(100); |
| hlipka | 2:1a436d154c84 | 171 | |
| hlipka | 0:cf4dd04052e3 | 172 | writeByte(len+1); |
| hlipka | 0:cf4dd04052e3 | 173 | wait_us(100); |
| hlipka | 2:1a436d154c84 | 174 | |
| hlipka | 0:cf4dd04052e3 | 175 | writeByte(cmd); |
| hlipka | 0:cf4dd04052e3 | 176 | wait_us(100); |
| hlipka | 2:1a436d154c84 | 177 | |
| hlipka | 2:1a436d154c84 | 178 | for (int i=0;i<len;i++) { |
| hlipka | 0:cf4dd04052e3 | 179 | writeByte(data[i]); |
| hlipka | 0:cf4dd04052e3 | 180 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 181 | } |
| hlipka | 0:cf4dd04052e3 | 182 | Timer t; |
| hlipka | 0:cf4dd04052e3 | 183 | t.start(); |
| hlipka | 2:1a436d154c84 | 184 | while (true) { |
| hlipka | 2:1a436d154c84 | 185 | wait_us(100); |
| hlipka | 2:1a436d154c84 | 186 | if (1==_sqi->read()) |
| hlipka | 2:1a436d154c84 | 187 | break; |
| hlipka | 2:1a436d154c84 | 188 | if (t.read_ms()>1) |
| hlipka | 2:1a436d154c84 | 189 | break; |
| hlipka | 0:cf4dd04052e3 | 190 | } |
| hlipka | 0:cf4dd04052e3 | 191 | char rhead=readByte(); |
| hlipka | 0:cf4dd04052e3 | 192 | wait_us(100); |
| hlipka | 2:1a436d154c84 | 193 | if (rhead!=0x55) { |
| hlipka | 2:1a436d154c84 | 194 | if (doEnable) |
| hlipka | 2:1a436d154c84 | 195 | _enable->write(1); |
| hlipka | 0:cf4dd04052e3 | 196 | printf("rh=0x%x\n",rhead); |
| hlipka | 0:cf4dd04052e3 | 197 | return -1000; |
| hlipka | 0:cf4dd04052e3 | 198 | } |
| hlipka | 0:cf4dd04052e3 | 199 | char rlen=readByte(); |
| hlipka | 0:cf4dd04052e3 | 200 | wait_us(100); |
| hlipka | 2:1a436d154c84 | 201 | if (rlen==2) { |
| hlipka | 0:cf4dd04052e3 | 202 | char r=readByte(); |
| hlipka | 0:cf4dd04052e3 | 203 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 204 | char rc=readByte(); |
| hlipka | 0:cf4dd04052e3 | 205 | wait_us(100); |
| hlipka | 2:1a436d154c84 | 206 | if (doEnable) |
| hlipka | 2:1a436d154c84 | 207 | _enable->write(1); |
| hlipka | 0:cf4dd04052e3 | 208 | if (rc!=cmd) |
| hlipka | 0:cf4dd04052e3 | 209 | return -2000; |
| hlipka | 0:cf4dd04052e3 | 210 | return -r; |
| hlipka | 2:1a436d154c84 | 211 | } else if (rlen==3) { |
| hlipka | 0:cf4dd04052e3 | 212 | char r=readByte(); |
| hlipka | 0:cf4dd04052e3 | 213 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 214 | char rc=readByte(); |
| hlipka | 0:cf4dd04052e3 | 215 | wait_us(100); |
| hlipka | 2:1a436d154c84 | 216 | if (rc!=cmd) { |
| hlipka | 2:1a436d154c84 | 217 | if (doEnable) |
| hlipka | 2:1a436d154c84 | 218 | _enable->write(1); |
| hlipka | 0:cf4dd04052e3 | 219 | return -3000; |
| hlipka | 0:cf4dd04052e3 | 220 | } |
| hlipka | 0:cf4dd04052e3 | 221 | char rd=readByte(); |
| hlipka | 0:cf4dd04052e3 | 222 | wait_us(100); |
| hlipka | 2:1a436d154c84 | 223 | if (doEnable) |
| hlipka | 2:1a436d154c84 | 224 | _enable->write(1); |
| hlipka | 0:cf4dd04052e3 | 225 | if (r==0) |
| hlipka | 0:cf4dd04052e3 | 226 | return rd; |
| hlipka | 0:cf4dd04052e3 | 227 | return -r; |
| hlipka | 2:1a436d154c84 | 228 | } else { |
| hlipka | 2:1a436d154c84 | 229 | if (doEnable) |
| hlipka | 2:1a436d154c84 | 230 | _enable->write(1); |
| hlipka | 0:cf4dd04052e3 | 231 | return -4000; |
| hlipka | 0:cf4dd04052e3 | 232 | } |
| hlipka | 0:cf4dd04052e3 | 233 | } |
| hlipka | 2:1a436d154c84 | 234 | void AR1020::calibrate() { |
| hlipka | 0:cf4dd04052e3 | 235 | _irq->rise(NULL); |
| hlipka | 0:cf4dd04052e3 | 236 | |
| hlipka | 0:cf4dd04052e3 | 237 | DigitalOut led1(LED1); |
| hlipka | 0:cf4dd04052e3 | 238 | DigitalOut led2(LED2); |
| hlipka | 0:cf4dd04052e3 | 239 | DigitalOut led3(LED3); |
| hlipka | 0:cf4dd04052e3 | 240 | DigitalOut led4(LED4); |
| hlipka | 2:1a436d154c84 | 241 | led1=0; |
| hlipka | 2:1a436d154c84 | 242 | led2=0; |
| hlipka | 2:1a436d154c84 | 243 | led3=1; |
| hlipka | 2:1a436d154c84 | 244 | led4=1; |
| hlipka | 2:1a436d154c84 | 245 | |
| hlipka | 2:1a436d154c84 | 246 | int r=cmd(0x13,NULL,0); |
| hlipka | 0:cf4dd04052e3 | 247 | printf("disable touch=%i\n",r); |
| hlipka | 0:cf4dd04052e3 | 248 | wait_ms(100); |
| hlipka | 0:cf4dd04052e3 | 249 | if (r<0) |
| hlipka | 0:cf4dd04052e3 | 250 | return; |
| hlipka | 0:cf4dd04052e3 | 251 | led4=0; |
| hlipka | 2:1a436d154c84 | 252 | |
| hlipka | 0:cf4dd04052e3 | 253 | int regStart=cmd(0x22,NULL,0); |
| hlipka | 0:cf4dd04052e3 | 254 | printf("reg offset=%i\n",regStart); |
| hlipka | 0:cf4dd04052e3 | 255 | |
| hlipka | 0:cf4dd04052e3 | 256 | char cid[3]={0x00,0x0d+regStart,0x01}; |
| hlipka | 0:cf4dd04052e3 | 257 | int mode=cmd(0x20,cid,3); |
| hlipka | 0:cf4dd04052e3 | 258 | printf("mode=%i\n",mode); |
| hlipka | 0:cf4dd04052e3 | 259 | |
| hlipka | 0:cf4dd04052e3 | 260 | if (regStart<0) |
| hlipka | 0:cf4dd04052e3 | 261 | return; |
| hlipka | 0:cf4dd04052e3 | 262 | printf("start calibrate\n"); |
| hlipka | 2:1a436d154c84 | 263 | led3=0; |
| hlipka | 0:cf4dd04052e3 | 264 | char cid2[4]={0x00,0x0e+regStart,0x01,0x19}; |
| hlipka | 0:cf4dd04052e3 | 265 | r=cmd(0x21,cid2,4); |
| hlipka | 0:cf4dd04052e3 | 266 | printf("set inset=%i\n",r); |
| hlipka | 0:cf4dd04052e3 | 267 | if (r<0) |
| hlipka | 0:cf4dd04052e3 | 268 | return; |
| hlipka | 0:cf4dd04052e3 | 269 | |
| hlipka | 0:cf4dd04052e3 | 270 | _enable->write(1); |
| hlipka | 2:1a436d154c84 | 271 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 272 | _enable->write(0); |
| hlipka | 0:cf4dd04052e3 | 273 | wait_us(10); |
| hlipka | 2:1a436d154c84 | 274 | char cid3[1]={0x04}; |
| hlipka | 2:1a436d154c84 | 275 | cmd(0x14,cid3,1,false); |
| hlipka | 2:1a436d154c84 | 276 | |
| hlipka | 2:1a436d154c84 | 277 | wait_ms(1); |
| hlipka | 0:cf4dd04052e3 | 278 | |
| hlipka | 0:cf4dd04052e3 | 279 | int resp=readCalibResponse(); |
| hlipka | 0:cf4dd04052e3 | 280 | printf("status=%i\n",resp); |
| hlipka | 0:cf4dd04052e3 | 281 | printf("start OK, press upper left"); |
| hlipka | 0:cf4dd04052e3 | 282 | led1=1; |
| hlipka | 0:cf4dd04052e3 | 283 | resp=readCalibResponse(); |
| hlipka | 0:cf4dd04052e3 | 284 | printf("status=%i\n",resp); |
| hlipka | 0:cf4dd04052e3 | 285 | printf("press upper right"); |
| hlipka | 0:cf4dd04052e3 | 286 | led2=1; |
| hlipka | 0:cf4dd04052e3 | 287 | resp=readCalibResponse(); |
| hlipka | 0:cf4dd04052e3 | 288 | printf("status=%i\n",resp); |
| hlipka | 0:cf4dd04052e3 | 289 | printf("press lower right"); |
| hlipka | 0:cf4dd04052e3 | 290 | led3=1; |
| hlipka | 0:cf4dd04052e3 | 291 | resp=readCalibResponse(); |
| hlipka | 0:cf4dd04052e3 | 292 | printf("status=%i\n",resp); |
| hlipka | 0:cf4dd04052e3 | 293 | printf("press lower left"); |
| hlipka | 0:cf4dd04052e3 | 294 | led4=1; |
| hlipka | 0:cf4dd04052e3 | 295 | resp=readCalibResponse(); |
| hlipka | 0:cf4dd04052e3 | 296 | printf("status=%i\n",resp); |
| hlipka | 2:1a436d154c84 | 297 | |
| hlipka | 2:1a436d154c84 | 298 | _enable->write(1); |
| hlipka | 2:1a436d154c84 | 299 | |
| hlipka | 2:1a436d154c84 | 300 | r=cmd(0x23,NULL,0); |
| hlipka | 2:1a436d154c84 | 301 | printf("save registers=%i\n",r); |
| hlipka | 2:1a436d154c84 | 302 | |
| hlipka | 2:1a436d154c84 | 303 | r=cmd(0x12,NULL,0); |
| hlipka | 0:cf4dd04052e3 | 304 | printf("enable touch=%i\n",r); |
| hlipka | 2:1a436d154c84 | 305 | |
| hlipka | 0:cf4dd04052e3 | 306 | _irq->rise(this, &AR1020::read); |
| hlipka | 2:1a436d154c84 | 307 | |
| hlipka | 0:cf4dd04052e3 | 308 | } |
| hlipka | 0:cf4dd04052e3 | 309 | |
| hlipka | 2:1a436d154c84 | 310 | int AR1020::readCalibResponse() { |
| hlipka | 2:1a436d154c84 | 311 | while (true) { |
| hlipka | 0:cf4dd04052e3 | 312 | int r=readByte(); |
| hlipka | 2:1a436d154c84 | 313 | if (r!=0x55) { |
| hlipka | 2:1a436d154c84 | 314 | // printf("1=0x%x\n",r); |
| hlipka | 0:cf4dd04052e3 | 315 | wait_ms(100); |
| hlipka | 0:cf4dd04052e3 | 316 | continue; |
| hlipka | 0:cf4dd04052e3 | 317 | } |
| hlipka | 0:cf4dd04052e3 | 318 | |
| hlipka | 0:cf4dd04052e3 | 319 | r=readByte(); |
| hlipka | 0:cf4dd04052e3 | 320 | wait_us(100); |
| hlipka | 2:1a436d154c84 | 321 | if (r!=0x02) { |
| hlipka | 0:cf4dd04052e3 | 322 | printf("2=0x%x\n",r); |
| hlipka | 0:cf4dd04052e3 | 323 | continue; |
| hlipka | 0:cf4dd04052e3 | 324 | } |
| hlipka | 2:1a436d154c84 | 325 | |
| hlipka | 0:cf4dd04052e3 | 326 | r=readByte(); |
| hlipka | 0:cf4dd04052e3 | 327 | wait_us(100); |
| hlipka | 2:1a436d154c84 | 328 | if (r!=0x00) { |
| hlipka | 0:cf4dd04052e3 | 329 | printf("3=0x%x\n",r); |
| hlipka | 0:cf4dd04052e3 | 330 | continue; |
| hlipka | 0:cf4dd04052e3 | 331 | } |
| hlipka | 0:cf4dd04052e3 | 332 | int rc=readByte(); |
| hlipka | 0:cf4dd04052e3 | 333 | wait_us(100); |
| hlipka | 2:1a436d154c84 | 334 | if (rc!=0x14) { |
| hlipka | 0:cf4dd04052e3 | 335 | printf("4=0x%x\n",r); |
| hlipka | 0:cf4dd04052e3 | 336 | continue; |
| hlipka | 0:cf4dd04052e3 | 337 | } |
| hlipka | 2:1a436d154c84 | 338 | |
| hlipka | 0:cf4dd04052e3 | 339 | return r; |
| hlipka | 0:cf4dd04052e3 | 340 | } |
| hlipka | 0:cf4dd04052e3 | 341 | } |
| hlipka | 0:cf4dd04052e3 | 342 | |
| hlipka | 2:1a436d154c84 | 343 | int AR1020::readByte() { |
| hlipka | 0:cf4dd04052e3 | 344 | _clk->write(0); |
| hlipka | 0:cf4dd04052e3 | 345 | wait_us(10); |
| hlipka | 0:cf4dd04052e3 | 346 | int r=0; |
| hlipka | 2:1a436d154c84 | 347 | for (int i=0;i<8;i++) { |
| hlipka | 0:cf4dd04052e3 | 348 | r=r<<1; |
| hlipka | 0:cf4dd04052e3 | 349 | _clk->write(1); |
| hlipka | 0:cf4dd04052e3 | 350 | wait_us(10); |
| hlipka | 0:cf4dd04052e3 | 351 | _clk->write(0); |
| hlipka | 0:cf4dd04052e3 | 352 | wait_us(10); |
| hlipka | 0:cf4dd04052e3 | 353 | int bit=_miso->read(); |
| hlipka | 0:cf4dd04052e3 | 354 | r+=bit; |
| hlipka | 0:cf4dd04052e3 | 355 | } |
| hlipka | 0:cf4dd04052e3 | 356 | // printf("<-%i\n",r); |
| hlipka | 0:cf4dd04052e3 | 357 | return r; |
| hlipka | 0:cf4dd04052e3 | 358 | } |
| hlipka | 0:cf4dd04052e3 | 359 | |
| hlipka | 2:1a436d154c84 | 360 | void AR1020::writeByte(char byte) { |
| hlipka | 0:cf4dd04052e3 | 361 | _clk->write(0); |
| hlipka | 0:cf4dd04052e3 | 362 | wait_us(10); |
| hlipka | 0:cf4dd04052e3 | 363 | // printf("->0x%x\n",byte); |
| hlipka | 2:1a436d154c84 | 364 | for (int i=0;i<8;i++) { |
| hlipka | 0:cf4dd04052e3 | 365 | int bit=byte>127; |
| hlipka | 0:cf4dd04052e3 | 366 | // printf("%i",bit); |
| hlipka | 0:cf4dd04052e3 | 367 | _clk->write(1); |
| hlipka | 0:cf4dd04052e3 | 368 | wait_us(10); |
| hlipka | 0:cf4dd04052e3 | 369 | _mosi->write(bit); |
| hlipka | 0:cf4dd04052e3 | 370 | wait_us(10); |
| hlipka | 0:cf4dd04052e3 | 371 | _clk->write(0); |
| hlipka | 0:cf4dd04052e3 | 372 | wait_us(10); |
| hlipka | 0:cf4dd04052e3 | 373 | byte=(char)(byte<<1); |
| hlipka | 0:cf4dd04052e3 | 374 | |
| hlipka | 0:cf4dd04052e3 | 375 | } |
| hlipka | 0:cf4dd04052e3 | 376 | // printf("\n"); |
| hlipka | 0:cf4dd04052e3 | 377 | } |
AR1020